(3beta,4alpha,16beta)-13,28-epoxy-16,23-dihydroxyolean-11-en-3-yl-6-deoxy-3-o-beta-d-glucopyranosyl-beta-d-galactopyranoside; (3beta,13alpha,16beta,17alpha)-16,23-dihydroxy-13,28-epoxyolean-11-en-3-yl 6-deoxy-3-O-beta-D-glucopyranosyl-beta-D-galactopyranoside; sailkosaponin A